/* ==============================
   knutlabs — Custom Hugo Theme
   Primary: #174EA6
   Off-white: #F4F6FA
   ============================== */

:root {
  --color-primary: #174EA6;
  --color-primary-dark: #0F3A7A;
  --color-primary-light: #1D5FCC;
  --color-primary-subtle: #E8EEF8;
  --color-bg: #F4F6FA;
  --color-bg-white: #FFFFFF;
  --color-text: #1E293B;
  --color-text-secondary: #64748B;
  --color-text-muted: #94A3B8;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  --color-sidebar-bg: #FFFFFF;
  --color-sidebar-hover: #F0F4FA;
  --color-sidebar-active: #E8EEF8;
  --color-code-bg: #1E1E2E;
  --color-success: #059669;
  --color-danger: #DC2626;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --sidebar-width: 360px;
  --topbar-height: 56px;
  --content-max-width: 820px;
  --radius: 8px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

  --transition: 150ms ease;
}

/* ===== Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  padding-top: var(--topbar-height);
}

body.sidebar-open {
  overflow: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary-light);
}

img {
  max-width: 100%;
  height: auto;
}

/* ===== Layout ===== */
.layout {
  display: flex;
  min-height: calc(100vh - var(--topbar-height));
}

/* ===== Top Bar (always visible) ===== */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-height);
  background: var(--color-bg-white);
  border-bottom: 1px solid var(--color-border);
  z-index: 80;
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 14px;
}

.menu-btn {
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.menu-btn:hover {
  background: var(--color-sidebar-hover);
}

.topbar-title-link {
  text-decoration: none;
}

.topbar-title {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-primary);
  letter-spacing: -0.03em;
}

/* ===== Sidebar — always slide-out drawer ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-sidebar-bg);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow: hidden;
  transform: translateX(-100%);
  transition: transform 280ms ease;
  box-shadow: none;
}

.sidebar.open {
  transform: translateX(0);
  box-shadow: var(--shadow-lg);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--color-border-light);
  flex-shrink: 0;
}

.site-title {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.site-title:hover {
  opacity: 0.85;
}

.site-logo-img {
  width: 34px;
  height: 34px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.site-name {
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
  color: var(--color-primary);
}

.sidebar-close {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.sidebar-close:hover {
  background: var(--color-sidebar-hover);
  color: var(--color-text);
}

/* ===== Text Search ===== */
.sidebar-search {
  padding: 16px 20px 12px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.text-search {
  position: relative;
}

.text-search .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

.text-search input {
  width: 100%;
  padding: 10px 12px 10px 36px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.text-search input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

.text-search input::placeholder {
  color: var(--color-text-muted);
}

/* ===== Label Filter ===== */
.label-filter {
  position: relative;
}

.label-filter-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.label-filter-btn:hover {
  border-color: var(--color-primary);
}

.label-filter-btn.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
  color: var(--color-primary);
}

.label-filter-btn .chevron {
  margin-left: auto;
  transition: transform var(--transition);
}

.label-filter.open .label-filter-btn .chevron {
  transform: rotate(180deg);
}

.label-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 200;
  display: none;
  max-height: 340px;
  overflow: hidden;
  flex-direction: column;
}

.label-filter.open .label-dropdown {
  display: flex;
}

.label-dropdown-search {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border-light);
}

.label-dropdown-search input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  outline: none;
  transition: border-color var(--transition);
}

.label-dropdown-search input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

.label-dropdown-search input::placeholder {
  color: var(--color-text-muted);
}

.label-dropdown-list {
  overflow-y: auto;
  flex: 1;
  padding: 6px 0;
}

.label-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  cursor: pointer;
  transition: background var(--transition);
  user-select: none;
}

.label-option:hover {
  background: var(--color-sidebar-hover);
}

.label-option.hidden {
  display: none;
}

.label-checkbox {
  display: none;
}

.label-check-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  color: transparent;
  transition: all var(--transition);
  flex-shrink: 0;
}

.label-checkbox:checked + .label-check-mark {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.label-name {
  font-size: 0.8125rem;
  color: var(--color-text);
  flex: 1;
  text-transform: capitalize;
}

.label-count {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  background: var(--color-bg);
  padding: 1px 7px;
  border-radius: 10px;
  font-weight: 500;
}

.label-dropdown-actions {
  padding: 8px 12px;
  border-top: 1px solid var(--color-border-light);
}

.label-clear-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  font-family: var(--font-sans);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all var(--transition);
}

.label-clear-btn:hover {
  color: var(--color-danger);
  background: #FEF2F2;
}

/* ===== Post List ===== */
.sidebar-posts {
  flex: 1;
  overflow-y: auto;
  padding: 8px 12px;
}

.sidebar-posts::-webkit-scrollbar {
  width: 4px;
}

.sidebar-posts::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-posts::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.post-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: background var(--transition);
  margin-bottom: 2px;
}

.post-item:hover {
  background: var(--color-sidebar-hover);
  color: var(--color-text);
}

.post-item.active {
  background: var(--color-sidebar-active);
  color: var(--color-primary);
}

.post-item.filtered-out {
  display: none;
}

.post-item-title {
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
}

.post-item-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.post-label-tag {
  font-size: 0.6875rem;
  padding: 1px 8px;
  border-radius: 10px;
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  font-weight: 500;
  text-transform: capitalize;
}

.sidebar-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--color-border-light);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

/* ===== Overlay ===== */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  z-index: 90;
  backdrop-filter: blur(2px);
}

.sidebar-overlay.active {
  display: block;
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  padding: 40px;
  min-height: calc(100vh - var(--topbar-height));
  margin-left: 0;
}

/* ===== Home Page ===== */
.content-home {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.home-hero {
  padding: 60px 0 30px;
}

.home-hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  margin-bottom: 0;
}

.home-instructions {
  padding: 24px;
  background: var(--color-bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.home-instructions p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* ===== Label Results ===== */
.label-results {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 20px;
}

.label-result-item {
  display: block;
  padding: 18px 22px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  transition: all var(--transition);
}

.label-result-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  color: var(--color-text);
}

.label-result-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.label-result-item p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 6px;
}

/* ===== All Labels ===== */
.all-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.all-label-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  color: var(--color-text);
  font-size: 0.875rem;
  transition: all var(--transition);
}

.all-label-item:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.all-label-count {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* ===== Article / Post ===== */
.post {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.post-header {
  padding: 40px 0 32px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 32px;
}

.post-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--color-text);
  line-height: 1.25;
  margin-bottom: 14px;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.post-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.post-label {
  display: inline-block;
  font-size: 0.8125rem;
  padding: 3px 12px;
  border-radius: 14px;
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  font-weight: 500;
  text-transform: capitalize;
  transition: all var(--transition);
}

.post-label:hover {
  background: var(--color-primary);
  color: white;
}

/* ===== Post Content Typography ===== */
.post-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-top: 2em;
  margin-bottom: 0.75em;
  line-height: 1.3;
}

.post-content h2 {
  font-size: 1.6rem;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border-light);
}

.post-content h3 {
  font-size: 1.3rem;
}

.post-content h4 {
  font-size: 1.1rem;
}

.post-content p {
  margin-bottom: 1.25em;
}

.post-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--color-primary-subtle);
}

.post-content a:hover {
  text-decoration-color: var(--color-primary);
}

.post-content ul,
.post-content ol {
  margin-bottom: 1.25em;
  padding-left: 1.5em;
}

.post-content li {
  margin-bottom: 0.4em;
}

.post-content blockquote {
  margin: 1.5em 0;
  padding: 16px 20px;
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-subtle);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text);
}

.post-content blockquote p:last-child {
  margin-bottom: 0;
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 2px 6px;
  background: var(--color-primary-subtle);
  color: var(--color-primary-dark);
  border-radius: 4px;
}

.post-content pre {
  margin: 1.5em 0;
  padding: 20px 24px;
  background: var(--color-code-bg);
  border-radius: var(--radius);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  line-height: 1.6;
}

.post-content pre code {
  font-size: 0.8125rem;
  padding: 0;
  background: transparent;
  color: #E2E8F0;
  border-radius: 0;
}

.post-content img {
  margin: 1.5em 0;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius);
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.875rem;
}

.post-content table th,
.post-content table td {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.post-content table th {
  background: var(--color-bg);
  font-weight: 600;
}

.post-content table tr:hover {
  background: var(--color-bg);
}

.post-content hr {
  margin: 2em 0;
  border: none;
  border-top: 1px solid var(--color-border);
}

/* ===== Code Dropdown Shortcode ===== */
.code-dropdown {
  margin: 1.5em 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-bg-white);
}

.code-dropdown-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--color-bg);
  border: none;
  color: var(--color-text);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
}

.code-dropdown-toggle:hover {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.code-dropdown-icon {
  transition: transform var(--transition);
  flex-shrink: 0;
}

.code-dropdown.open .code-dropdown-icon {
  transform: rotate(90deg);
}

.code-dropdown-content {
  display: none;
  border-top: 1px solid var(--color-border);
}

.code-dropdown.open .code-dropdown-content {
  display: block;
}

.code-dropdown-content pre {
  margin: 0;
  border-radius: 0;
}

/* ===== Responsive — Tablet & smaller ===== */
@media (max-width: 768px) {
  .sidebar {
    width: 300px;
  }

  .main-content {
    padding: 20px 16px;
  }

  .post-header {
    padding: 20px 0 20px;
    margin-bottom: 24px;
  }

  .post-title {
    font-size: 1.5rem;
  }

  .home-hero {
    padding: 30px 0 20px;
  }

  .home-hero h1 {
    font-size: 2rem;
  }

  .home-instructions {
    padding: 18px;
  }

  .post-content pre {
    padding: 14px 16px;
  }

  .post-content pre code {
    font-size: 0.8rem;
  }

  .post-content h2 {
    font-size: 1.3rem;
  }

  .post-content h3 {
    font-size: 1.1rem;
  }

  .code-dropdown-toggle {
    padding: 10px 14px;
    font-size: 0.8125rem;
  }

  .post-content {
    font-size: 0.9375rem;
    line-height: 1.75;
  }
}

/* ===== Responsive — Small phones ===== */
@media (max-width: 400px) {
  .sidebar {
    width: 100%;
  }

  .main-content {
    padding: 16px 12px;
  }

  .post-title {
    font-size: 1.3rem;
  }

  .home-hero h1 {
    font-size: 1.6rem;
  }

  .topbar {
    padding: 0 12px;
  }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Highlight.js / Hugo code highlighting overrides */
.highlight {
  margin: 1.5em 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.highlight pre {
  margin: 0;
  border-radius: var(--radius);
}

/* ===== Hint / Callout Blocks ===== */
.hint {
  display: flex;
  gap: 12px;
  margin: 1.5em 0;
  padding: 16px 18px;
  border-radius: var(--radius);
  border-left: 4px solid;
  font-size: 0.9375rem;
  line-height: 1.65;
}

.hint-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.hint-content p:last-child {
  margin-bottom: 0;
}

.hint-info {
  background: #EFF6FF;
  border-color: #3B82F6;
  color: #1E3A5F;
}

.hint-info .hint-icon {
  color: #3B82F6;
}

.hint-warning {
  background: #FFFBEB;
  border-color: #F59E0B;
  color: #78350F;
}

.hint-warning .hint-icon {
  color: #F59E0B;
}

.hint-danger {
  background: #FEF2F2;
  border-color: #EF4444;
  color: #7F1D1D;
}

.hint-danger .hint-icon {
  color: #EF4444;
}

/* ===== Tabs ===== */
.tabs {
  margin: 1.5em 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-bg-white);
}

.tabs-header {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  overflow-x: auto;
}

.tabs-header button {
  padding: 10px 20px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
}

.tabs-header button:hover {
  color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.tabs-header button.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background: var(--color-bg-white);
}

.tabs-content {
  padding: 16px 20px;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.tab-panel p:last-child {
  margin-bottom: 0;
}

/* ===== Details / Collapsible ===== */
.details-block {
  margin: 1.5em 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-bg-white);
}

.details-block summary {
  padding: 12px 16px;
  background: var(--color-bg);
  font-weight: 500;
  font-size: 0.9375rem;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.details-block summary::-webkit-details-marker {
  display: none;
}

.details-block summary::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 6px solid var(--color-text-secondary);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform var(--transition);
  flex-shrink: 0;
}

.details-block[open] summary::before {
  transform: rotate(90deg);
}

.details-block summary:hover {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.details-content {
  padding: 16px 20px;
  border-top: 1px solid var(--color-border);
}

.details-content p:last-child {
  margin-bottom: 0;
}

/* ===== Button Shortcode ===== */
.btn-shortcode {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background: var(--color-primary);
  color: white !important;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none !important;
  transition: background var(--transition), box-shadow var(--transition);
  margin: 0.5em 0;
}

.btn-shortcode:hover {
  background: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  color: white !important;
}

/* ===== Mermaid Diagrams ===== */
.mermaid {
  margin: 1.5em 0;
  text-align: center;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 16px;
  overflow-x: auto;
}

/* ===== KaTeX Math ===== */
.katex-display {
  margin: 1.5em 0;
  padding: 16px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow-x: auto;
}

/* ===== Figure shortcode ===== */
figure {
  margin: 1.5em 0;
  text-align: center;
}

figure img {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

figcaption {
  margin-top: 8px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ===== Download Button ===== */
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--color-bg-white);
  color: var(--color-primary) !important;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none !important;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  margin: 0.5em 0;
}

.btn-download:hover {
  background: var(--color-primary);
  color: white !important;
  box-shadow: var(--shadow-md);
}

.btn-download svg {
  flex-shrink: 0;
}

/* ===== Post Footer Labels ===== */
.post-footer {
  margin-top: 3rem;
}

.post-footer-rule {
  border: none;
  border-top: 1px solid var(--color-border);
  margin-bottom: 1.25rem;
}

.post-footer-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}